iv got the same thing happing. could use some help as well. the error comes up as i load steam VR. iv had to jimmy rig my setup with a HDMI to USB cable for the HTC, as i only have one HDMI port, witch is used for my monitor. my display settings i believe are correct. iv uninstalled all VR APPs and links restarted my computer and re-installed steam VR. any help would be awesome